I love Omegas! If I will be reborn in a new world like this, I think I would become an Omega.
I think I would be an Omega guy who pretend to be a beta so I can get work. I am a bit manipulative and calculating, I would get myself a beta convenience partner for when I need help because of my heat. I would even falsified my health condition so it would not be weird if I absent from work once in awhile.
Even so, I would be an Omega who believed the Fated Pair story. So I would change my jobs a lot as a fake beta just to find my own fated Alpha.
Gosh I need some pure fluffy story to cleanse my tainted soul after reading this. Karma is a btch.